65641705037 has 4 divisors (see below), whose sum is σ = 65655738720. Its totient is φ = 65627671356.

The previous prime is 65641705009. The next prime is 65641705049. The reversal of 65641705037 is 73050714656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65641705037 - 2²⁶ = 65574596173 is a prime.

It is a super-2 number, since 2×65641705037² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65641705237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7009823 + ... + 7019180.

It is an arithmetic number, because the mean of its divisors is an integer number (16413934680).

Almost surely, 2^65641705037 is an apocalyptic number.

It is an amenable number.

65641705037 is a deficient number, since it is larger than the sum of its proper divisors (14033683).

65641705037 is a wasteful number, since it uses less digits than its factorization.

65641705037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14033682.

The product of its (nonzero) digits is 529200, while the sum is 44.

The spelling of 65641705037 in words is "sixty-five billion, six hundred forty-one million, seven hundred five thousand, thirty-seven".